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Photo by: Thibault Camus
Former French President Jacques Chirac, 78, leaves his office in Paris on Monday, March 7, 2011. Mr. Chirac's long-awaited trial on corruption charges stemming from his tenure as mayor of Paris was postponed on Tuesday until at least June. (AP Photo/Thibault Camus)

Robert Mueller’s special counsel investigation into Russian meddling in the 2016 election has cost $6.7 million during the first four and a half months of the probe. Click to see past independent counsel investigations guilty of racking up high bills.